Package com.dalsemi.onewire.container

Class OneWireContainer0F

java.lang.Object
com.dalsemi.onewire.container.OneWireContainer
com.dalsemi.onewire.container.OneWireContainer0F
public class OneWireContainer0F extends OneWireContainer

1-Wire container for 8192 byte Add-Only memory (EPROM) iButton, DS1986 and 1-Wire Chip, DS2506. This container encapsulates the functionality of the 1-Wire family type 0F (hex)

The iButton package for this device is primarily used as a read/write portable memory device. The 1-Wire Chip version is used for non-volatile storage.

Features

  • 65536 bits (8192 bytes) Electrically Programmable Read-Only Memory (EPROM) communicates with the economy of one signal plus ground
  • EPROM partitioned into 256-bit (32-byte) pages for randomly accessing packetized data
  • Each memory page can be permanently write-protected to prevent tampering
  • Device is an "add only" memory where additional data can be programmed into EPROM without disturbing existing data
  • Architecture allows software to patch data by superseding an old page in favor of a newly programmed page
  • Overdrive mode boosts communication to 142 kbits per second
  • Reads over a wide voltage range of 2.8V to 6.0V from -40@htmlonly &#176C @endhtmlonly to +85@htmlonly &#176C @endhtmlonly; programs at 11.5V to 12.0V from -40@htmlonly &#176C @endhtmlonly to +50@htmlonly &#176C @endhtmlonly

Alternate Names

  • D2506

Memory

The memory can be accessed through the objects that are returned from the getMemoryBanks method.

The following is a list of the MemoryBank instances that are returned:
  • Main Memory
    • Implements MemoryBank, PagedMemoryBank, OTPMemoryBank
    • Size 8192 starting at physical address 0
    • Features Write-once general-purpose non-volatile needs-program-pulse
    • Pages 256 pages of length 32 bytes giving 29 bytes Packet data payload
    • Page Features page-device-CRC pages-redirectable pages-lockable redirection-lockable
    • Extra information for each page Inverted redirection page, length 1
  • Write protect pages
    • Implements MemoryBank, PagedMemoryBank, OTPMemoryBank
    • Size 32 starting at physical address 0 (in STATUS memory area)
    • Features Write-once not-general-purpose non-volatile needs-program-pulse
    • Pages 4 pages of length 8 bytes
    • Page Features page-device-CRC
  • Write protect redirection
    • Implements MemoryBank, PagedMemoryBank, OTPMemoryBank
    • Size 32 starting at physical address 32 (in STATUS memory area)
    • Features Write-once not-general-purpose non-volatile needs-program-pulse
    • Pages 4 pages of length 8 bytes
    • Page Features page-device-CRC
  • Bitmap of used pages for file structure
    • Implements MemoryBank, PagedMemoryBank, OTPMemoryBank
    • Size 24 starting at physical address 64 (in STATUS memory area)
    • Features Write-once not-general-purpose non-volatile needs-program-pulse
    • Pages 3 pages of length 8 bytes
    • Page Features page-device-CRC
  • Page redirection bytes
    • Implements MemoryBank, PagedMemoryBank, OTPMemoryBank
    • Size 256 starting at physical address 256 (in STATUS memory area)
    • Features Write-once not-general-purpose non-volatile needs-program-pulse
    • Pages 32 pages of length 8 bytes
    • Page Features page-device-CRC

Usage

See the usage example in OneWireContainer to enumerate the MemoryBanks.
See the usage examples in MemoryBank, PagedMemoryBank, and OTPMemoryBank for bank specific operations.

DataSheets

http://pdfserv.maxim-ic.com/arpdf/DS2506.pdf
http://pdfserv.maxim-ic.com/arpdf/DS1986.pdf
See Also:

  • Constructor Details

    • OneWireContainer0F

      public OneWireContainer0F()
      Create an empty container that is not complete until after a call to setupContainer.

      This is one of the methods to construct a container. The others are through creating a OneWireContainer with parameters.

      See Also:

    • OneWireContainer0F

      public OneWireContainer0F(DSPortAdapter sourceAdapter, byte[] newAddress)
      Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

      This is one of the methods to construct a container. The other is through creating a OneWireContainer with NO parameters.

      Parameters:
      sourceAdapter - adapter instance used to communicate with this iButton
      newAddress - Address of this 1-Wire device
      See Also:

    • OneWireContainer0F

      public OneWireContainer0F(DSPortAdapter sourceAdapter, long newAddress)
      Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

      This is one of the methods to construct a container. The other is through creating a OneWireContainer with NO parameters.

      Parameters:
      sourceAdapter - adapter instance used to communicate with this 1-Wire device
      newAddress - Address of this 1-Wire device
      See Also:

    • OneWireContainer0F

      public OneWireContainer0F(DSPortAdapter sourceAdapter, String newAddress)
      Create a container with the provided adapter instance and the address of the iButton or 1-Wire device.

      This is one of the methods to construct a container. The other is through creating a OneWireContainer with NO parameters.

      Parameters:
      sourceAdapter - adapter instance used to communicate with this 1-Wire device
      newAddress - Address of this 1-Wire device
      See Also:

  • Method Details